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The sum of the digits of a two digit number is 10. If 36 is subtracted from the number, the digit interchange their places Find the number​

User Fuzzygroup
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1 Answer

7 votes

Explanation:

Let A be the tens digit of the number and B be the ones digit.

We have A + B = 10 and 10A + B - 36 = 10B + A.

=> A + B = 10 and 9A - 36 = 9B

=> A + B = 10 and A - 4 = B

=> A + B = 10 and A - B = 4

Therefore 2A = 10 + 4 = 14,

A = 7 and B = 10 - 7 = 3.

Hence the number is 73.

User Rajitha Udayanga
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